Fixes found with valgind

[Dirk Hohndel]

On Thu, Dec 18, 2014 at 08:47:41AM +0100, Anton Lundin wrote:
> This is a bunch of minor fixes found with valgrind. A bunch of them are
> not "real" leaks because they are only leaked on exit, but they might
> prevent you from finding real leaks so thats why i try to close all of
> them here.
> 
> I'm not really sure about all of the qt fixes because i know way to
> little about how qt actually works, but they doesn't break things
> horribly and doesn't trigger leaks according to valgrind anylonger =)

Thanks for delaying these until after the release. I'm happy to take them
this early in the cycle and then yell at you later if it turned out you
did break something :-)

/D